CN113532599B - Weighing module and weighing system comprising same - Google Patents

Weighing module and weighing system comprising same Download PDF

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Publication number
CN113532599B
CN113532599B CN202010290873.6A CN202010290873A CN113532599B CN 113532599 B CN113532599 B CN 113532599B CN 202010290873 A CN202010290873 A CN 202010290873A CN 113532599 B CN113532599 B CN 113532599B
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China
Prior art keywords
bending
plate
reed
weighing module
bending plate
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CN113532599A (en
Inventor
吴友义
巢志鹤
李春辉
张萍
蔡金杰
丁成刚
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Mettler Toledo Changzhou Measurement Technology Ltd
Mettler Toledo Changzhou Precision Instruments Ltd
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Mettler Toledo Changzhou Measurement Technology Ltd
Mettler Toledo Changzhou Precision Instruments Ltd
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Publication of CN113532599A publication Critical patent/CN113532599A/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01GWEIGHING
    • G01G3/00Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances
    • G01G3/08Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a leaf spring
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01GWEIGHING
    • G01G19/00Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
    • G01G19/52Weighing apparatus combined with other objects, e.g. furniture
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01GWEIGHING
    • G01G21/00Details of weighing apparatus
    • G01G21/28Frames, Housings
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01GWEIGHING
    • G01G23/00Auxiliary devices for weighing apparatus
    • G01G23/005Means for preventing overload
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01GWEIGHING
    • G01G23/00Auxiliary devices for weighing apparatus
    • G01G23/06Means for damping oscillations, e.g. of weigh beams

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Force In General (AREA)

Abstract

The invention provides a weighing module and a weighing system comprising the same, wherein the weighing module comprises: the first bending plate and the second bending plate are respectively fixed at two ends of the bottom end surface of the plate; the first bending plate and the second bending plate are respectively fixed at two ends of the upper end face of the bottom; the first bending plate on the top plate corresponds to the second bending plate on the bottom plate in an up-down mode, and the second bending plate on the top plate corresponds to the first bending plate on the bottom plate in an up-down mode; the column type sensor is arranged between the top plate and the bottom plate; the reed cover is established on column type sensor, and the both ends of reed are installed between first bending board and second bending board through preventing the bolt that overturns, and the one end of reed is connected with the first bending board on the roof, and the other end is connected with the first bending board on the bottom plate. The invention has novel structure and simple appearance, has the functions of overload protection, overturn prevention, convenient maintenance and the like, and can maintain the flexibility of the system while limiting by adopting the elastic horizontal limiting device, so that the symmetrical measuring precision is not influenced.

Description

Weighing module and weighing system comprising same
Technical Field
The invention relates to the field of weighing modules, in particular to a weighing module and a weighing system comprising the same.
Background
In the prior art, the weighing module is widely applied to storage containers such as a charging bucket, a hopper, a reaction kettle and the like and is used for weighing the weight of substances in the containers.
The main structure of the current mainstream weighing module can be divided into a moving part and a stationary part. The movable part comprises an upper top plate, two bent C-shaped plates and a middle plate, and the four plates are connected by welding. The movable part has the defects of complex structure, large welding amount, high processing cost and the like. On the basis of the moving part, a mechanical accessory for connecting horizontal limit is welded, and appearance defects such as seam undercut and weld flash often occur during the welding of the mechanical accessory.
In addition, the stationary part is a bottom plate and the gap interface between the moving part and the stationary part is located at the bottom of the module. The structure causes bad feedback that dust and impurities invade at gaps to influence weighing, and the defect of tedious maintenance is caused. Moreover, rigid constraint is generally adopted for constraint of horizontal displacement, and the accurate weighing is greatly influenced.
Therefore, how to develop a module that is simple in structure, low in cost, easy to install and maintain, and the horizontal constraint does not affect the weighing performance is a core problem to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to overcome the defects of complicated maintenance, high processing cost and the like of a weighing module in the prior art, and provides the weighing module and a weighing system comprising the weighing module.
The invention solves the technical problems by the following technical proposal:
a weighing module, characterized in that it comprises:
the bending device comprises a top plate, a group of first bending plates and second bending plates, wherein the first bending plates and the second bending plates are respectively fixed at two ends of the bottom end face of the top plate;
the bottom plate, the other group of first bending plates and the second bending plates are respectively fixed at two ends of the upper end face of the bottom;
the first bending plate on the top plate corresponds to the second bending plate on the bottom plate in an up-down mode, and the second bending plate on the top plate corresponds to the first bending plate on the bottom plate in an up-down mode;
a column sensor mounted between the top plate and the bottom plate;
the reed, the reed cover is established on the column type sensor, just the both ends of reed are installed through anti-toppling bolt first bending plate with between the second bending plate, the one end of reed with first bending plate on the roof is connected, the other end with first bending plate on the bottom plate is connected.
According to one embodiment of the invention, the anti-overturning bolt sequentially passes through the second bending plate, the reed and the first bending plate, and the end part is fixed by a positioning nut, and a first gap is arranged between the positioning nut and the first bending plate.
According to one embodiment of the invention, the positioning nut comprises a first positioning column and a second positioning column, the second positioning column is positioned on the top end face of the first positioning column, a joint of the second positioning column and the first positioning column is a positioning step, and the positioning nut is installed on the second positioning column.
According to one embodiment of the invention, the first bending plate and the second bending plate are C-shaped plates or U-shaped plates.
According to one embodiment of the invention, a reed pressing sleeve is arranged between the anti-overturning bolt and the second bending plate, and a second gap is arranged between the end part of the reed pressing sleeve and the reed.
According to one embodiment of the invention, the sum of the first gap and the second gap is 3mm to 5mm.
According to one embodiment of the invention, the inside diameter of the reed crimp meets the relationship d+ (0.3 mm to 0.5 mm), where D is the nominal diameter of the anti-toppling bolt.
According to one embodiment of the invention, the two ends of the reed are respectively provided with a first via hole, and the width of the first via hole meets the relation D+ (0.3-0.5 mm), wherein D is the nominal diameter of the anti-overturning bolt.
According to one embodiment of the invention, the second bending plate is provided with a second via hole, and a gap between the second via hole and the outer circle of the reed pressing sleeve is 2-3 mm.
According to one embodiment of the invention, the inner side and/or the outer side of the connection part of the first bending plate and the second bending plate with the top plate and the bottom plate are/is provided with reinforcing ribs.
According to one embodiment of the invention, two ends of the reed are bent upwards to form two step surfaces, the first via hole is formed on the step surfaces, and the first via hole is an oval hole or a waist hole.
The invention also provides a weighing system which is characterized by comprising the weighing module.
The invention has the positive progress effects that:
the weighing module and the weighing system comprising the same are novel in structure, concise in appearance, and convenient to maintain, and have the functions of overload protection, overturning prevention and the like.
Structurally, the weighing module is simple and attractive, and is symmetrical in structure.
Functionally, the weighing module has the functions of overload protection, overturn prevention, convenient maintenance and the like, and is provided with an elastic horizontal limiting device.
In the processing, the first bending plate and the second bending plate in the weighing module can use raw materials with the same size and bending dies with the same size, and the two materials can be designed to be identical in all the dimensions except for the difference of the sizes of the middle through holes. The blanking, cutting, bending and stamping reinforcing ribs are all identical, and the processing is convenient and the cost is low.
Drawings
The above and other features, properties and advantages of the present invention will become more apparent from the following description of embodiments taken in conjunction with the accompanying drawings in which like reference characters designate like features throughout the drawings, and in which:
fig. 1 is a schematic view of the weighing module according to the invention.
Fig. 2 is a cross-sectional view taken along line M-M in fig. 1.
Fig. 3 is a schematic view of an installation structure of a top plate, a first bending plate and a second bending plate in the weighing module of the invention.
Fig. 4 is a schematic structural view of a weighing module according to the present invention, in which a reinforcing rib is disposed at a connection portion between a first bending plate or a second bending plate and a top plate.
Fig. 5 is a schematic view of an installation structure of a bottom plate, a first bending plate and a second bending plate in the weighing module of the present invention.
Fig. 6 is a schematic structural view of a weighing module according to the present invention, in which a reinforcing rib is disposed at a connection portion between a first bending plate or a second bending plate and a bottom plate.
Figure 7 is a front view of a reed in a weighing module of the present invention.
Figure 8 is a top view of a reed in a weighing module of the present invention.
FIG. 9 is a schematic view of the structure of an anti-toppling bolt in the weighing module of the present invention.
[ reference numerals ]
Top plate 10
First bending plate 20
Second bending plate 30
Bottom plate 40
Column sensor 50
Reed 60
Upper pressure-bearing head 11
Lower bearing head 41
Anti-overturning bolt 70
Positioning nut 71
First gap L1
First positioning column 711
Second positioning column 712
Positioning step A
Spring pressing sleeve 80
First via holes 61
Second via hole 31
Reinforcing rib 90
Step surface 62
Second gap L2
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.
Embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts.
Furthermore, although terms used in the present invention are selected from publicly known and commonly used terms, some terms mentioned in the present specification may be selected by the applicant at his or her discretion, the detailed meanings of which are described in relevant parts of the description herein.
Furthermore, it is required that the present invention is understood, not simply by the actual terms used but by the meaning of each term lying within.
Fig. 1 is a schematic view of the weighing module according to the invention. Fig. 2 is a cross-sectional view taken along line M-M in fig. 1. Fig. 3 is a schematic view of an installation structure of a top plate, a first bending plate and a second bending plate in the weighing module of the invention. Fig. 4 is a schematic structural view of a weighing module according to the present invention, in which a reinforcing rib is disposed at a connection portion between a first bending plate or a second bending plate and a top plate. Fig. 5 is a schematic view of an installation structure of a bottom plate, a first bending plate and a second bending plate in the weighing module of the present invention. Fig. 6 is a schematic structural view of a weighing module according to the present invention, in which a reinforcing rib is disposed at a connection portion between a first bending plate or a second bending plate and a bottom plate.
Figure 7 is a front view of a reed in a weighing module of the present invention. Figure 8 is a top view of a reed in a weighing module of the present invention. FIG. 9 is a schematic view of the structure of an anti-toppling bolt in the weighing module of the present invention.
As shown in fig. 1 to 9, the present invention provides a weighing module including a top plate 10, a first bending plate 20, a second bending plate 30, a bottom plate 40, a column sensor 50, and a reed 60. Wherein, a set of first bending plate 20 and second bending plate 30 are respectively fixed at both ends of the bottom end surface of the top plate 10. The other sets of first bending plates 20 and second bending plates 30 are respectively fixed to both ends of the upper end surface of the bottom 40. The first bending plate 20 on the top plate 10 and the second bending plate 30 on the bottom plate 40 correspond up and down, and the second bending plate 30 on the top plate 10 and the first bending plate 20 on the bottom plate 40 correspond up and down, that is, the first bending plate 20 and the second bending plate 30 are respectively arranged in an opposite direction of 'X', so that a limiting function is realized.
The column sensor 50 is installed between the top plate 10 and the bottom plate 40, an upper pressure-bearing head 11 is provided on the bottom end surface of the top plate 10, a lower pressure-bearing head 41 is provided on the upper end surface of the bottom plate 40, and the column sensor 50 is provided between the upper pressure-bearing head 11 and the lower pressure-bearing head 41.
The reed 60 is sleeved on the column sensor 50, two ends of the reed 60 are installed between the first bending plate 20 and the second bending plate 30 through anti-overturning bolts 70, one end of the reed 60 is connected with the first bending plate 20 on the top plate 10, and the other end is connected with the first bending plate 20 on the bottom plate 40.
Preferably, the anti-overturning bolt 70 passes through the second bending plate 30, the reed 60 and the first bending plate 20 in sequence, and the ends are fixed by the positioning nut 71, and a first gap L1 is provided between the positioning nut 71 and the first bending plate 20.
Further, the positioning nut 71 includes a first positioning column 711 and a second positioning column 712, the second positioning column 712 is located on the top end face of the first positioning column 711, and the junction of the second positioning column 712 and the first positioning column 711 is a positioning step a, and the positioning nut 71 is mounted on the second positioning column 712 and located on the positioning step a.
The first bending plate 20 and the second bending plate 30 are preferably C-shaped plates or U-shaped plates in this embodiment.
More preferably, a leaf pressing sleeve 80 is provided between the anti-overturning bolt 70 and the second bending plate 30, and a second gap L2 is provided between an end of the leaf pressing sleeve 80 and the leaf 60 to maintain the leaf vertical degree of freedom. The sum of the first gap L1 and the second gap L2 in this embodiment is preferably 3mm to 5mm.
The inside diameter of the reed crimp 80 satisfies the relationship d+ (0.3 mm to 0.5 mm), where D is the nominal diameter of the anti-toppling bolt.
The two ends of the reed 60 are respectively provided with a first through hole 61, and the width of the first through hole 61 meets the relation D+ (0.3 mm-0.5 mm), wherein D is the nominal diameter of the anti-overturning bolt. The second bending plate 30 is provided with a second through hole 31, and the clearance between the second through hole 31 and the outer circle of the reed pressing sleeve 80 is preferably 2 mm-3 mm.
In addition, reinforcing ribs 90 may be provided at the inner and/or outer sides of the connection points of the first and second bending plates 20 and 30 with the top and bottom plates 10 and 40, respectively.
Preferably, two ends of the reed 60 are bent upwards to form two step surfaces 62, the first via hole 61 is formed on the step surfaces 62, and the first via hole 61 is preferably an elliptical hole or a waist hole. The reed with the structure plays two roles, namely, the bending part can be used for selectively punching the reinforcing ribs, the elasticity of the reed is enhanced, and a more stable horizontal limiting function is achieved. Secondly, the reed main body part can avoid the wiring of the sensor as far as possible by downwards bending, and the interference is avoided.
Notably, the reed 60 must be attached to the first bending plate 20 of the top plate on one side and to the first bending plate 20 of the bottom plate on one side. Because the aperture on the first bending plate is only 0.3-0.5 mm larger than the outer diameter D of the anti-overturning bolt, the horizontal displacement can be limited by slightly bringing horizontal force. Due to the existence of the clearance of 0.5mm and the elasticity of the reed, the spring is an elastic constraint system, and the influence on the accuracy of the symmetry is not great.
Of course, the reed 60 may be designed into a flat plate shape or a wave shape, but the holes on both sides of the reed 60 cannot be made into pure round holes, elliptical holes or kidney-shaped holes.
When weighing is performed, the top plate assembly (including the top plate, the first bending plate and the second bending plate) moves downwards by about a fraction of a millimeter, and accordingly the reed is also deformed in the vertical direction by a fraction of a millimeter. In order to give the reed a degree of freedom to deform in the vertical direction, the reed press-on sleeve does not fully press the reed against the first bending plate, but leaves a gap of a second gap L2, the second gap L2 being only slightly larger than the distance the system is moved down when weighing. In addition, in the vertical direction, the reed can be considered to be a cantilever beam structure, and due to the elasticity of the reed, when the reed is subjected to a small load in the vertical direction, the deformation of the reed in the vertical direction is far greater than the downward movement height of the top plate assembly during weighing, so that the counter force of the reed in the vertical direction during weighing is almost negligible to weighing.
The invention also provides a weighing system comprising a weighing module as described above. For example, in tanks, hoppers, reaction kettles, etc. The weighing module is simple in structure and convenient to process; and integrates the functions of horizontal elastic limit, overload protection, anti-overturning protection and the like.
In the structure of the weighing module according to the present invention, a top plate assembly is formed by welding one set of the first bending plate 20, the second bending plate 30 and the top plate 10, and a bottom plate assembly is formed by welding the other set of the first bending plate 20, the second bending plate 30 and the bottom plate 40.
For the whole structure, except the top plate component and the bottom plate component, the rest are machined parts or outsourcing standard parts, the mass and scale customized production is easy, the top plate component and the bottom plate component are formed by welding a flat plate (top plate and bottom plate) and two C-shaped plates (namely a first bending plate 20 and a second bending plate 30), the welding is only carried out on the periphery of the root of the C-shaped plate, the welding space is sufficient, the welding operation is convenient, and the automatic welding is easy to realize. The side spoke of the C-shaped plate presses the reinforcing rib, so that the bearing capacity of the structure can be enhanced on one hand; on one hand, the welding quantity can be increased, and the horizontal load resistance is enhanced; on the other hand, the structural saturation and the aesthetic feeling can be enhanced.
Under the normal weighing condition, as shown in fig. 1, the top plate 10 and the material tank support legs are connected by bolts, the weight is loaded on the top plate 10, and a complete weighing system is formed by the upper pressure-bearing head 11, the column sensor 50, the lower pressure-bearing head 41 and the bottom plate 40. The multifunctional electric heating device has the following functions:
1. overload protection function: if the system is overloaded, the sensor is crushed, and the left and right first bending plates 20 are contacted with the second bending plates 30, and the overload is born by the contact of the two groups of plates on two sides, so that the whole charging bucket system is still safe.
2. Overturn preventing function: the anti-overturning bolt and the nut play a role in preventing overturning. When the system is tipped over due to wind or seismic loads, the first and second deflection plates on the same side will separate. When the separation distance reaches L1+L2, then the anti-overturning bolt and the nut clamp the first bending plate and the second bending plate to prevent overturning, and the L1+L2 is set to be 3-5 mm generally. The anti-overturning bolt can be a standard part bolt, but in order to ensure the distance of L1, a step is designed at the end part of the bolt and used for positioning a nut, so that the distance of L1 is ensured.
3. Maintenance convenience function: the device is different from a jacking device which is fully arranged on the periphery of a conventional module design and is difficult to provide enough space for maintenance. In this application because the first bent plate of major structure, second bent plate are arranged in the left and right sides, the rear side space of module is sufficient, and the change of sensor is maintenance, convenient operation is carried out to the jacking device of being convenient for. And the dynamic and static binding surfaces are positioned at the middle position of the module, so that the possible interference caused by the invasion of impurities is effectively prevented, and the maintenance difficulty is reduced to a certain extent.
4. Horizontal limit function: for a charging bucket or a reaction kettle with stirring operation, horizontal displacement exists, if the horizontal displacement is not restrained, contact interference between module connecting pieces can be caused, weighing precision is affected, and even structural damage is induced. The spring leaf type elastic limit structure is scientifically adopted, and the spring leaf type elastic limit structure is combined with the first bending plate, the second bending plate, the anti-overturning bolt and the spring leaf pressing sleeve to complete the horizontal limit function.
There are two types of conventional horizontal stops: the mechanical limit and the horizontal pull rod are used for limiting only by means of the distance between the two components, when the horizontal force drives one side component to horizontally move for a certain distance to contact the other component, hard contact is realized for limiting, the limiting structure is simple and rough, friction and abrasion can be caused after the two components are contacted, the weighing precision can be reduced by friction, and the abrasion is easy to cause surface damage of the components. When the horizontal pull rod is used in a place with larger shaking, the horizontal pull rod is easy to cause premature failure due to fatigue, and when the installation axis of the pull rod is not horizontal, a component force in the vertical direction can be generated, so that weighing is influenced.
For example, assuming that the nominal diameter of the anti-toppling bolt 70 is D, the inner diameter d+0.3 to 0.5 of the reed pressing sleeve 80 is further designed, the width w=d+0.3 to 0.5 of the via holes on both sides of the reed, the diameter d1=d+0.3 to 0.5 of the via holes of the first bending plate 20, and the diameter D2 of the via holes of the second bending plate 30 may be appropriately larger, for example, the clearance between D2 and the outer circumference of the reed pressing sleeve may be 2 to 3mm.
As shown in FIG. 1, when the weighing module receives a horizontal force from left to right, the top plate assembly tends to move rightwards, and the first bending plate on the right side of the top plate assembly drives the anti-overturning bolt and the reed pressing sleeve on the right side part to move rightwards due to the small gap between D1 and D. For the left structural portion of the weighing module, the left side first bending plate on the bottom plate assembly restrains the left side anti-toppling bolt to remain stationary due to the bottom plate assembly being restrained on the foundation. The reed positioned between the two bolts is stretched and deformed, and the reed is tensioned to generate counter force so as to limit the bottom plate assembly to move rightwards, so that the horizontal limiting function is realized.
However, since the reed is not a rigid body, the elasticity of the reed still gives the module a certain degree of freedom of movement, and the weak degree of freedom ensures that the module can still maintain higher weighing precision when being horizontally restrained. The spring leaf elasticity can be properly enhanced for the occasion with higher weighing precision, and the constraint is improved. For the occasion that the weighing requirement is not high, the reed can use softer material, reduces the restraint.
Similarly, when horizontal force is from right to left, the reed is compressed, and the horizontal limiting function is achieved. In addition, the through holes on the two sides of the reed are not round holes, but kidney-shaped holes, so that the horizontal movement in the plane is limited, but the vertical movement in the plane is not limited, and the weighing performance is kept as much as possible. The deformation of the reed in the vertical direction is far greater than the movement displacement of the top plate assembly during weighing, and the influence on weighing can be ignored
In addition, if the weighing system suddenly suffers from an extremely serious horizontal force, when the self-restraining capacity of the reed is far exceeded, the reed pressing sleeve at the periphery of the anti-overturning bolt is in rigid limit with the excessive Kong Huijie contact of the second bending plate, so that another overload protection function is achieved.
In summary, the weighing module and the weighing system comprising the weighing module are novel in structure, concise in appearance, and convenient to maintain, and have the functions of overload protection, overturn prevention and the like.
Structurally, the weighing module is simple and attractive, and is symmetrical in structure.
Functionally, the weighing module has the functions of overload protection, overturn prevention, convenient maintenance and the like, and is provided with an elastic horizontal limiting device.
In the processing, the first bending plate and the second bending plate in the weighing module can use raw materials with the same size and bending dies with the same size, and the two materials can be designed to be identical in all the dimensions except for the difference of the sizes of the middle through holes. The blanking, cutting, bending and stamping reinforcing ribs are all identical, and the processing is convenient and the cost is low.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that these are by way of example only, and the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the principles and spirit of the invention, but such changes and modifications fall within the scope of the invention.

Claims (10)

1. A weighing module, the weighing module comprising:
the bending device comprises a top plate, a group of first bending plates and second bending plates, wherein the first bending plates and the second bending plates are respectively fixed at two ends of the bottom end face of the top plate;
the bending device comprises a bottom plate, another group of first bending plates and second bending plates, wherein the first bending plates and the second bending plates are respectively fixed at two ends of the upper end face of the bottom plate;
the first bending plate on the top plate corresponds to the second bending plate on the bottom plate in an up-down mode, and the second bending plate on the top plate corresponds to the first bending plate on the bottom plate in an up-down mode;
a column sensor mounted between the top plate and the bottom plate;
the reed is sleeved on the column type sensor, one end of the reed is arranged between a first bending plate on the top plate and a second bending plate on the bottom plate through an anti-overturning bolt, the other end of the reed is arranged between the second bending plate on the top plate and the first bending plate on the bottom plate through an anti-overturning bolt, one end of the reed is connected with the first bending plate on the top plate, and the other end of the reed is connected with the first bending plate on the bottom plate;
the anti-overturning bolt sequentially passes through the second bending plate, the reed and the first bending plate, the end part of the anti-overturning bolt is fixed through a positioning nut, and a first gap is reserved between the positioning nut and the first bending plate;
a reed pressing sleeve is arranged between the anti-overturning bolt and the second bending plate, and a second gap is formed between the end part of the reed pressing sleeve and the reed.
2. The weighing module of claim 1, wherein said positioning nut comprises a first positioning post and a second positioning post, said second positioning post is located on a top end surface of said first positioning post, and a junction of said second positioning post and said first positioning post is a positioning step, and said positioning nut is mounted on said second positioning post.
3. The weighing module of claim 1, wherein said first and second bending plates are C-shaped or U-shaped plates.
4. The weighing module of claim 1, wherein a sum of said first gap and said second gap is 3mm to 5mm.
5. The weighing module of claim 1, wherein the inside diameter of the reed crimp meets the relationship d+ (0.3 mm-0.5 mm), where D is the nominal diameter of the anti-toppling bolt.
6. The weighing module of claim 5, wherein first vias are respectively formed at two ends of the reed, and a width of the first vias satisfies a relation d+ (0.3 mm-0.5 mm), wherein D is a nominal diameter of the anti-toppling bolt.
7. The weighing module of claim 6, wherein the second bending plate is provided with a second via hole, and a gap between the second via hole and the outer circle of the reed pressing sleeve is 2 mm-3 mm.
8. The weighing module of claim 1, wherein the first and second bending plates are provided with reinforcing ribs on the inner and/or outer sides of the joints with the top and bottom plates.
9. The weighing module according to claim 6, wherein two ends of the reed are bent upwards to form two step surfaces, the first via hole is formed on the step surfaces, and the first via hole is an oval hole or a waist hole.
10. A weighing system, characterized in that it comprises a weighing module according to any one of claims 1-9.
CN202010290873.6A 2020-04-14 2020-04-14 Weighing module and weighing system comprising same Active CN113532599B (en)

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